Tension device for loom-shuttles.



E. BURGESS.

TENSION DEVICE FOR-100M SHUTTLES.

APPLICATION FILED NOV 21; 1914.

Patented July 13, 1915.

COLUMBIA PLANOGRAPH C0,. WASHINGTON D c Lldtiatidil.

ERNEST BURGESS; F NORWALK, CONNECTICUT.

TENSION DEVICE FOR LOOM-SHUTTLES.

Application filed November 21, 1914.

and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. 7

This invention relates to tension devices for loom shuttles, and the object of the same is to provide a simple and etlicient device which will apply an even pressure along the entire length of the bobbin to prevent the silk or other filament from passing over the ends of the spool and becoming entangled.

In carrying out my invention 1 make use of a flat sheet metal brake or thumb-bit in which a small spring is connected for giving just the desired tension to the surface of the spool or bobbin to insure a uniform feed of the silk from said bobbin.-

The foregoing and other objects may be attained by means of the construction illustrated in the accompanying drawing, in which,

Figure 1 is a horizontal sectional view of a shuttle looking down upon a tension device made in accordance with this invention, Fig. 2 is a perspective view of the brake or thumb-bit, showing the spring in dotted lines, Fig. 3 is a vertical sectional view through the shuttle with the bobbin and thumb-bit removed, and Fig. 4' is a perspective view of the supporting rod for the thumb-bit or brake.

Referring to the drawing, the numeral 1 designates a shuttle of the usual construction provided with an opening 2 through the same and a curved or stirrup shaped bar 8 connecting the two sides of the shuttle and provided with the usual eyelet 4 to permit the silk or thread to pass through the same to be unwound from the bobbin 5. The ordinary rings 6 are also secured to the shuttle, and the slot 7 for one end of the bobbin spindle is provided in one side of the shuttle as usual.

The tension plate or thumb-bit 8 is provided with a long bearing 9 for the wire rod 10, said rod being bent at right angles at one end as at 11 to enter an aperture formed Specification of Letters Patent.

Patented Jerr is, was.

Serial No. 873,366.

in the shuttle. The plate 8 is provided at its lower edge with a bent up portion 12',

which insures a smooth edge 13 to bear on the bobbin. The plate 8 is also provided with a guard 14. for a spring 1:"), said spring being connected at one end 15 to the shuttle, and the other end adapted to be caught under the guard is and held in place to give tension to the plate 8 when in position. At the opposite end of the plate from the guard 14 is an upwardly extending lip 16. lhe rod 10 is provided at one end with a sheet metal lug 17 which is bent around the rod 10 in the form of a sleeve 18. and at the opposite end of the rod 10 is a lug 19 having a lip 20 cut therefrom, said lug being mounted on the rod 10 by means of the sleeve 21.

When the rod 10 is in place, the lugs 17 and I9 occupy slots in the shuttle, the member 11 occupies an aperture or socket in the shuttle and the lip 20 engages the spring 15 upon one side, while the lip 16 engages said spring on the other side and tends to hold said spring in place. For holding the entire tension device connected to a shuttle a curved spring 22 is engaged at its ends in the shuttle and said spring spans the tension device and can be readily removed when it is desired to take the tension device out.

It has been found in practice that a spring like 15 connected to one end of the shuttle and detachably engaged with the guard 14 is more convenient than a pin or spring formed integral with the rod 10. The spring 15 can be readily renewed when required without interfering with the bar 10 and its bearings connected with the tension plate or thumb-bit 8. The spring; 15 being connected at one end to the shuttle and the opposite end caught under the guard 14 has a tension outward from the guard. thus throwing the lower edge of the guard down against the bobbin, or the thread wound on the bobbin.

Various changes may be made in the details of construction without departing from the spirit and scope of the invention as de fined in the claims.

What is claimed is 1. A tension device for loom shuttles comprising a plate having a hearing at one edge thereof, a rod inserted in said bearing and provided with an angular end secured to the shuttle, the opposite end of said plate being provided with an integral lip, lugs connected to saidrod and one of said lugs being'provided with an upwardly turned lip a sleeve and provided With an angular end,

said plate having a guard for the end of a Y spring, and a lip at the opposite end of said plate, and a detachable spring having an angular end connected to the shuttle and the opposite end adapted to be detachably connected to said guard, a rod provided with av lug in the opposite ends and one of said lugs having an integral lip.

' v 3. 'A tension device for loom shuttles com- In testimony whereof I affix my signature in presence of two Witnesses. a

ERNEST BURGESS. Witnesses:

a GEO. M. ConLsoN,

EMIL G. NAUMANN.

Copies of this patent may be obtained for five cents each by addressing the Commissioner of Patents,

7 Washington, D. 0,! 

